Hey everyone a firend of mine has a TT and these codes keep comming up. also his ABS light keeps going on and off. he has already changes teh MAF and none of the porblems were fixed. can some one please tell me what these2 codes mean and what u think is hroblem could be and if its related.

the car is a:
00 TT 1.8t quattro

Thanks

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Address 03: ABS Brakes
Part No: 8N0 907 379 C
Component: ABS/EDS 20 IE CAN V003
Coding: 13504
Shop #: WSC 01236

1 Fault Found:
01279 - Longitudinal Acceleration Sensor (G251)
57-00 - Electric Circuit Failure

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Address 08: Auto HVAC
Part No: 8N0 820 043
Component: TT-KLIMAVOLLAUTOMAT D02
Coding: 00140
Shop #: WSC 01236

1 Fault Found:
00604 - Potentiometer Positioning Motor for Air Flow Flap (G113)
30-10 - Open or Short to Plus - Intermittent